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2. Paleotectonic investigations of the Pennsylvanian System in the United States
3. Paleotectonic investigations of the Pennsylvanian System in the United States. Part III. Plates
4. Palynological analyses of upper Pennsylvanian coal beds and adjacent strata from the proposed Pennsylvanian system stratotype in West Virginia : a report on the stratigraphic distribution and abundance of upper Pennsylvanian palynomorphs
5. Palynological analyses of upper Pennsylvanian coal beds and adjacent strata from the proposed Pennsylvanian system stratotype in West Virginia : a report on the stratigraphic distribution and abundance of upper Pennsylvanian palynomorphs
6. Palynological studies of lower Pennsylvanian coal beds and adjacent strata of the proposed Pennsylvanian system stratotype in Virginia and West Virginia
7. Palynological studies of lower Pennsylvanian coal beds and adjacent strata of the proposed Pennsylvanian system stratotype in Virginia and West Virginia : a report on the occurrence of lower Pennsylvanian palynomorphs and their thermal alteration
8. Palynological studies of Middle Pennsylvanian coal beds of the proposed Pennsylvania System stratotype in West Virginia
9. Palynological studies of Middle Pennsylvanian coal beds of the proposed Pennsylvania System stratotype in West Virginia
10. Palynological studies of the coals of the Princess reserve district in northeastern Kentucky
11. Palynological studies of the coals of the Princess reserve district in northeastern Kentucky,
12. Palynology and its relationship to climatically induced depositional cycles in the Middle Pennsylvanian (Desmoinesian) Paradox Formation of southeastern Utah
13. Palynology and its relationship to climatically induced depositional cycles in the Middle Pennsylvanian (Desmoinesian) Paradox Formation of southeastern Utah
14. Palynology of part of the Paradox and Honaker Trail formations, Paradox Basin, Utah
15. Palynology of part of the Paradox and Honaker Trail formations, Paradox Basin, Utah
16. Palynology of selected coal beds in the proposed Pennsylvanian System stratotype in West Virginia
17. Palynology of selected coal beds in the proposed Pennsylvanian System stratotype in West Virginia
18. Patterns of diagenesis in Lower and Middle Pennsylvanian sandstones of the Illinois Basin, Illinois, Indiana, and Kentucky
19. Pennsylvanian and associated rocks in Wyoming
20. Pennsylvanian and associated rocks in Wyoming,
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